Will give brainlest to correct answer animals are often grouped as a. vertebrates or invertebrates. b. heterotrophs or autotrophs. c. walkers or crawlers. d. swimmers or runners.

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food